To the Editor: We read with interest the article by Kamath et al1 about vascular anomalies in Alagille syndrome (AGS). We know that hypotheses are not anyone’s property, but it is unfair to omit two previously published papers from our team. Indeed, we suggested after studying JAGGED1 expression during human embryogenesis that abnormal angiogenesis was implicated in the pathogenesis of AGS and ...

Birthmarks are common and commonly ignored by patients and primary care doctors. Yet they sometimes represent significant vascular anomalies that require diagnosis and treatment. We summarize when and how to work up a variety of vascular anomalies.